Composition for the dyeing of human hair

ABSTRACT

Hair dyeing composition on the basis of an oxidation dyestuff precursor reacting with peroxide, comprising at least one developing and/or coupling substance selected from the group  
     a) 3-chloro-p-aminophenol and/or 2-chloro-p-aminophenol,  
     b) 2-methyl-5-aminophenol, 2-methyl-5-hydroxyethyl aminophenol, 2-methyl-5-γ-hydroxypropyl aminophenol, 2-methyl-5-methyl aminophenol, 2-methyl-5-ethyl aminophenol, 2-methoxy-5-aminophenol, 2-methyl-4-methoxy-5-aminophenol and/or 2-methyl-4-methoxy-5-hydroxyethyl aminophenol and  
     c) 1-methoxy-2,4-diaminobenzene, 1-β-hydroxyethyloxy-2,4-diaminobenzene, 1-(1,2-dihydroxypropyloxy)-2,4-diaminobenzene, 1-methoxy-2-amino-4-β-hydroxyethyl aminobenzene, 1,3-bis-(2,4-diaminophenoxy)-propane, 2,4-diamino-5-methyl-phenetol and/or 1-β-hydroxyethyloxy-5-methyl-2,4-diaminobenzene.

[0001] The present invention concerns a composition for the dyeing ofhuman hair on the basis of an oxidation dyestuff precursor systemreacting with peroxide which provides long-lasting, intensive colorseither used as such, or which can be used to obtain further shades incombination with additional developing and/or coupling agents and whichdoes not damage the hair even upon repeated application within shortintervals.

[0002] The developing substances still most frequently used in hairdyeing compositions are 1,4-diaminobenzene (p-phenylenediamine) and1-methyl-2,5-diaminobenzene (p-toluylenediamine). Although incorporationof these substances largely fulfills the user's color wishes, there arestill shades that cannot be completely achieved by the use thereof.

[0003] Proposals have also been made to close this gap by the use ofalternative developing substances. To a limited degree this is possiblewith the use of tetraaminopyrimidine or 2-(2,5-diaminophenyl)ethanol(see EP-A 7537 and EP-B 400 330); however, it is then necessary toaccept reduced color intensity in other shades. A further satisfactorysolution of this problem is disclosed in EP-A 615 743, with the use of2-(2′-hydroxyethyl amino)-5-aminotoluene or the water-soluble saltsthereof, as a component of oxidation hair dye compositions.

[0004] However, to the present it has not been possible to achievestrong colorations in the range of gray-red or in the range of brown bythis means.

[0005] The invention starts from the task of counteracting thisdeficiency and providing an oxidation dyestuff composition whichachieves intensive, glossy colorations, especially in the range of brownand gray-red, and which leaves the hair without damage even uponrepeated application within short periods of time.

[0006] This task is solved when such a hair dyeing composition comprisesan oxidation dyestuff system reacting with peroxide which is selectedfrom a) 3-chloro-p-aminophenol and/or 2-chloro-p-aminophenol, b)3-(N-methyl-N-hydroxyethyl amino)-phenol, 3-morpholinophenol,3-(N-hydroxyethyl amino)-phenol and/or 3-(N-hydroxypropyl amino)-phenoland c) 2,4-diaminobenzene, 1-methoxy-2,4-diamino-benzene,1-β-hydroxyethyloxy-2,4-diaminobenzene,1-methoxy-2-amino-4-β-hydroxyethyl aminobenzene,1,3-bis-(2,4-diaminophenoxy)-propane, 2,4-diamino-5-methyl-phenetol,1-β-hydroxyethyloxy-5-methyl-2,4-diaminobenzene and/or5-chloro-2,4-diaminobenzene.

[0007] After oxidation with peroxide, use of these compositions on thebasis of a customary carrier provides very expressive, intensive,long-lasting hair colorations, especially in the range of brown andgray-red, which can be varied to achieve further shades by the additionof the respective further developing and coupling substances.

[0008] In addition to the named developing and coupling substances it isalso possible to incorporate further substances of this type.

[0009] These are, for example, 1-methoxy-2-amino4-(β-hydroxyethylamino)benzene, 2-amino-3-hydroxypyridine, 3-amino-2-methylamino-6-methoxypyridine, resorcinol, 2-methyl resorcinol,4-chlororecorcinol, 1,3-diaminobenzene, 1,6-dihydroxy-naphthaline,1,7-dihydroxy-naphthaline, p-phenylenediamine, p-toluylenediamine,2,6-dimethyl-p-phenylenediamine, 2-hydroxymethyl-p-pheny-lenediamine,2-hydroxyethyl-p-phenylenediamine, 2-n-propyl-p-phenylenediamine,N,N-bis(β-hydroxyethyl)-p-phenylenediamine,N-methoxyethyl-p-phenylenediamine and/or5-chloro-2-hydroxyethyl-p-phenylenediamine or the water-soluble saltsthereof.

[0010] The total concentration of the developing substances customarilyranges between about 0.05% and 5%, preferably 0.1% and 4%, in particular0.25% to 0.5% and 2.5% to 3% by weight, calculated to the total hairdyeing composition (excluding the oxidation agent), whereby thesefigures are always related to the proportion of free base. The preferredweight proportion of the developing substances to the additionaldeveloping and coupling substances ranges between about 1:8 to 8:1,preferably about 1:5 to 5:1, in particular 1:2 to 2:1.

[0011] In the hair dyeing compositions according to the invention, thecoupling substance(s) as reaction partners of the developingsubstance(s) are present in approximately the same molecular proportionsas the developing substances, i.e. in amounts from 0.05% to 5.0%,preferably 0.1% to 4%, in particular 0.5% to 3% by weight, calculated tothe total composition (excluding the oxidizing agent), whereby thesefigures are always related to the proportion of free base.

[0012] If desired, the compositions according to the invention can alsocontain so-called shading agents for precise adjustment of the desiredshade, in particular direct-acting dyestuffs.

[0013] Such shading agents are, for example, nitro dyestuffs such as2-amino4,6-dinitrophenol, 2-amino4-nitrophenol,2-amino-6-chloro4-nitrophenol, etc., preferably in amounts from about0.05% to 2.5%, in particular 0.1% to 1% by weight of the dyestuffcomposition (excluding the oxidizing agent).

[0014] The hair dyeing compositions according to the invention cancomprise the basic substances and additives customarily found in suchcompositions, conditioning agents, etc., known as state of the art anddescribed, for example, in the monography of K. Schrader, “Grundlagenund Rezepturen der Kosmetika”, 2nd Ed. (Hüthig Buch Verlag, Heidelberg,1989), pp. 782 to 815. They can be prepared as solutions, creams, gelsor also in the form of aerosol products; suitable carrier materialcompositions are known as state of the art.

[0015] For application, the oxidation dyestuff precursor is mixed withan oxidizing agent. The preferred oxidizing agent is hydrogen peroxide,for example in a concentration of 2% to 6% by weight.

[0016] However, the use of other peroxides such as urea peroxide andmelamine peroxide is also possible.

[0017] The pH-value of the ready-to-use hair dyeing composition, i.e.after mixing with peroxide, can be in a slightly acidic range, i.e. from5.5 to 6.9, as well as in the neutral or alkaline range, i.e. between pH7.1 and 10.

[0018] In the following, various Examples are used to illustrate theinvention. Stearyl alcohol 8.0 (% by wt.) Coco fatty acidmonoethanolamide 4.5 1.2-Propanediol mono/distearate 1.3 Coco fattyalcohol polyglycol ether 4.0 Sodium lauryl sulfate 1.0 Oleic acid 2.01.2-Propanediol 1.5 Na-EDTA 0.5 Sodium sulfite 1.0 Protein hydrolyzate0.5 Ascorbic acid 0.2 Perfume 0.4 Ammonia, 25% 1.0 Ammonium chloride 0.5Panthenol 0.8 Water ad 100.00

[0019] The oxidation dyestuff combinations according to the inventionwere incorporated into this carrier, whereby the water content wasreduced accordingly.

[0020] The colorations were carried out on wool patches and strands ofbleached human, hair by application of a 1:1 mixture of a dyestuffprecursor and a 6% hydrogen peroxide solution (pH-value of the mixture:9.8) with twenty minutes processing at room temperature, subsequentrinsing and drying.

[0021] The following colorations were achieved: Example 1: 0.41 (% bywt.) 3-Chloro-p-aminophenol HCL 0.17 3-(N-hydroxyethyl amino)-phenol0.31 1-Methoxy-2-amino-4-β-hydroxy- ethyl aminobenzene H₂SO₄ Coloration:Intensive gray-red. Example 2: 0.41 (% by wt.) 3-Chloro-p-aminophenolHCL 0.20 3-Morpholinophenol 0.27 1-β-Hydroxyethyloxy-2.4- diaminobenzeneHCL Coloration: Gray-red. Example 3: 0.41 (% by wt.)3-Chloro-p-aminophenol HCL 0.16 2-Chloro-p-aminophenol 0.193-(N-methyl-N-hydroxyethyl amino)-phenol 0.12 2.4-DiaminobenzeneColoration: Gray-brown. Example 4: 0.41 (% by wt.)3-Chloro-p-aminophenol HCL 0.17 3-(N-Hydroxyethyl amino)-phenol 0.491.3-bis-(2.4-Diaminophenoxy)- propane 4 HCL Coloration: Brown-violet.Example 5: 0.32 (% by wt.) 2-Chloro-p-aminophenol 0.17 3-(N-Hydroxyethylamino)-phenol 0.16 5-Chloro-2.4-diaminobenzene Coloration: Gold-brown.

1. Hair dyeing composition on the basis of an oxidation dyestuffprecursor reacting with peroxide, comprising at least one developingand/or coupling substance selected from the group a)3-chloro-p-aminophenol and/or 2-chloro-p-aminophenol, b)3-(N-methyl-N-hydroxyethyl amino)-phenol, 3-morpholinophenol,3-(N-hydroxyethyl amino)-phenol and/or 3-(N-hydroxypropyl amino)-phenoland c) 2,4-diaminobenzene, 1-methoxy-2,4-diaminobenzene,1-β-hydroxyethyloxy-2,4-diaminobenzene,1-methoxy-2-amino-4-β-hydroxy-ethyl aminobenzene,1,3-bis-(2,4-diaminophenoxy)-propane, 2,4-diamino-5-methylphenetol,1-β-hydroxy-ethyloxy-5-methyl-2,4-diaminobenzene and/or5-chloro-2,4-diaminobenzene.